Polymer electrolyte membrane for solid polymer fuel cell, membrane-electrode assembly and fuel cell
US8137860B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2005 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jun 8, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a polymer electrolyte membrane for polymer electrolyte fuel cells, comprising a block copolymer which comprises, as its constituents, a polymer block (A) having as a main unit an aromatic vinyl compound unit whose α-carbon is quaternary carbon, and a flexible polymer block (B), and has ion-conducting groups on the polymer block (A).The electrolyte membrane of this invention is economical, mild to the environment and excellent in moldability and chemical stability and thus durability, and, therefore, can suitably be used in membrane electrode assemblies and polymer electrolyte fuel cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.